JAMAICA 1962 SG186/89var Essay

1962 five opt essays for the 1962-63 Independence issue comprising 6d opt in BLUE, 8d (x2) opts at lower left in black and RED, 1s and 2s opts in RED, affixed to archival piece (with 'CROWN STANDARD AGENTS' wmk), with M/S 'Not Approved (signature) 6/3/62' at lower right. Highly desirable, four of the essays being unique examples of the opt in unissued colours. [The 8d with black opt at lower left was subsequently issued as a later printing (SG 187a].